From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
The alteration of the overall steering ratio to 15/1 for Phantom Chassis 12-EX.
| Identifier | ExFiles\Box 17\3\ Scan199 | |
| Date | 22th March 1928 | |
| c. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} X7430 BY/HEB{H. Biraben}15/M.22.3.28. PHANTOM CHASSIS 12-EX. STEERING COLUMN & BOX SEC:7050. SIDE STEERING TUBE - SEC:7070. ALTERING OVERALL STEERING RATIO TO 15/1. Herewith please receive one Blue Print of each of the following:- F.78736 Arrgt.of Side Steering Tube. F.78737 Pendulum Lever (8.500 Long). 1 off. F.78738 Side Steering Tube. 1 # F.78739 Feed Pipe for Pendulum Lever. Kindly produce one set and fit to above chassis in accordance with Hs{Lord Ernest Hives - Chair}/Rml/LG16.3.28. It should be noted that a shorter Steering Nut and Cage F.78189/90 and F.78193 must be fitted in conjunction with this Pendulum Lever. Will RHC.{R. H. Coverley - Production Engineer} kindly arrange for springs F.77944 to be fitted in the Side Steering Tube instead of springs F.76726 as requested by Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} The Feed Pipe F.78739 issued above is to suit the Bijur Lubrication System fitted to this chassis. The alterations to the Pivots and the Cross Steering Tube have been issued by "G" Dept. see BY/TWD{T. W. D???Aeith}1/OK.21.3.28. BY/HEB.{H. Biraben} | ||